From the original publisher of daily sudokus in the U.S., USA TODAY presents 200 all-new sudoku puzzle challenges in 5 difficulty levels.From the original publisher of daily sudokus in the U.S., USA TODAY presents 200 all-new sudoku puzzle challenges in 5 difficulty levels.USA TODAY Sudoku Super Challenge is a collection featuring 200 sudoku puzzles in five difficulty levels from USA TODAY--the nation's newspaper. Features include: Introductory how-to section200 9 x 9 sudoku puzzlesComprehensive answer key
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